FILE - This file photo released by the Los Angeles Police Department shows Elisa Lam of Vancouver, B.C. Los Angeles police say a body has been found on the roof of the Cecil Hotel where Lam, a Canadian tourist, was last seen last month. (AP Photo/Los Angeles Police Department, File)

Guest complaints about low water pressure prompted a maintenance worker to make the gruesome discovery.

The cause of Lam's death has yet to be determined, but LAPD Sgt. Rudy Lopez called Lam's death suspicious. Before she died, hotel surveillance footage showed her inside an elevator pushing buttons and sticking her head out the doors, looking in both directions.

Lam, of Vancouver, British Columbia, traveled alone to Los Angeles on Jan. 26 and was last seen five days later by workers at the 600-room hotel near Skid Row.